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# QS9: Week 9 Survey Questions

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📗 Question 9

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📗 [1 points] Which of the following geometries can take in a let shape = new THREE.Shape();, a 2D shape, as a parameter?

THREE.ShapeGeometry(shape)
THREE.ExtrudeGeometry(shape)
THREE.LatheGeometry(shape)
THREE.TubeGeometry(shape)
THREE.BufferGeometry(shape)
None of the above.

📗 [1 points] To rotate an object cube = new THREE.Mesh(...); that is moving along a curve = new THREE.Curve(); and is current at curve.getPoint(t) so that it is facing the direction it is moving, where should the cube look at (what is the point p in cube.lookAt(p))?

cube.position.add(curve.getTangent(t))
curve.getPoint(t).add(curve.getTangent(t))
curve.getPointAt(t).add(curve.getTangentAt(t))
curve.getTangentAt(t)
curve.getTangent(t)
None of the above.

📗 [1 points] Which of the following are parametric surfaces in 3D with parameters u = 0 to u = 1 and v = 0 to v = 1? Do not include 3D curves as 3D surfaces.

[u, u, v]
[u, u + v, v]
[u, u, u]
[u, v]
[u, u]
None of the above.

📗 [1 points] Assuming no fake normals are used, what is the normal of a triangle face with vertices [0, 0, 0], [0, 1, 0], [0, 0, 1] (in this order)? Use the right-hand rule.

[-1, 0, 0]
[1, 0, 0]
[0, 0, 0]
[0, 1, 1]
[0, -1, -1]
None of the above.

📗 [1 points] Which of the following texture maps do not change the geometry (vertices) of a mesh? Technically, the question is asking which ones do not change the position of the vertices in the vertex shader.

normalMap
bumpMap
envMap
emissiveMap
displacementMap
None of the above.

📗 [1 points] Given vertices [0, 0], [0, 1], [1, 0] (in this order), where is the point with Barycentric coordinate [0.5, 0.5, 0]?

[0, 0.5]
[0.5, 0]
[0, 0]
[0, 1]
[1, 0]
None of the above.

📗 [1 points] Given vertices [0, 0], [0, 1], [1, 0] (in this order), what is the Barycentric coordinate of [1, 0]?

[0, 0, 1]
[0, 1, 0]
[1, 0, 0]
[1, 0]
[0, 1]
None of the above.

📗 [1 points] Which of the following THREE.Texture.minFilter use tri-linear interpolation to find the color of the pixel on a triangle?

THREE.LinearMipmapLinearFilter
THREE.NearestMipmapLinearFilter
THREE.NearestMipmapNearestFilter
THREE.LinearMipmapNearestFilter
THREE.LinearFilter
None of the above.

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# QS9: Week 9 Survey Questions

# Grade

# Submission